What is the use case for an iPad Pro vs the regular iPad or the iPad Air that I didn't knew even existed?

I have the feeling that everything one could do with the Pro could be done as well with the less expensive models. Apart from the handful of travel youtubers that might want to edit and render their videos in an airport terminal I think the use cases would be very niche. Yet a lot of people seem to prefer it over the other variants, I guess just because it exists and it is at the top of the line?